package com.xuenci.gulimall.order.service.impl;

import com.rabbitmq.client.Channel;
import com.xuenci.gulimall.order.entity.OrderEntity;
import com.xuenci.gulimall.order.entity.OrderReturnReasonEntity;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xuenci.common.utils.PageUtils;
import com.xuenci.common.utils.Query;

import com.xuenci.gulimall.order.dao.OrderItemDao;
import com.xuenci.gulimall.order.entity.OrderItemEntity;
import com.xuenci.gulimall.order.service.OrderItemService;

@RabbitListener(queues = {"hello-java-queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * queues：声明需要监听的所有队列
     *
     * class org.springframework.amqp.core.Message
     *
     * 参数可以写一下类型
     *  1、Message message原生消息详细信息，头+体
     *  2、T<发送的消息的类型> OrderReturnReasonEntity content；
     *  3、Channel channel：当前传输数据的通道
     *
     * Queue：可以很多人来监听。只要收到消息，队列删除消息，而且只能有一个收到此消息
     *  场景1：
     *      1）、订单服务启动多个；同一个消息只能有一个客户端收到
     *      2）、只有一个消息完全处理完，方法运行结束，我们就可以接收到下一个消息
     *
     */
//    @RabbitListener(queues = {"hello-java-queue"})
    @RabbitHandler
    public void recieveMessage(Message message, OrderReturnReasonEntity content, Channel channel
                               ) throws InterruptedException{
        // {"id":1,"name":"哈哈","sort":null,"status":null,"createTime":1653902169823}
        System.out.println("接收到消息。。。==>内容："+content);
        byte[] body = message.getBody();
        // 消息头属性信息
        MessageProperties messageProperties = message.getMessageProperties();
        // channel内按顺序自增
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag==>"+deliveryTag);
        // 签收货物,非批量模式
        try {
            if (deliveryTag%2==0){
                // 收货
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了货物。。"+deliveryTag);
            }else {
                // 退货  basicNack比basicReject多了一个是否可以批量拒绝  requeue=false  丢弃  requeue=true  发回服务器，服务器重新入队
                // long deliveryTag, boolean multiple, boolean requeue
                channel.basicNack(deliveryTag,false,true);
                // long deliveryTag, boolean requeue
//                channel.basicReject();
                System.out.println("没有签收货物。。"+deliveryTag);
            }
        }catch (IOException e) {
            // 网络中断
        }

    }

    @RabbitHandler
    public void recieveMessage2( OrderEntity entity) throws InterruptedException{
        System.out.println("接收到消息。。。==>内容："+entity);
    }
}